JP2849853B2 - Electrophoretic display - Google Patents
Electrophoretic displayInfo
- Publication number
- JP2849853B2 JP2849853B2 JP2086090A JP8609090A JP2849853B2 JP 2849853 B2 JP2849853 B2 JP 2849853B2 JP 2086090 A JP2086090 A JP 2086090A JP 8609090 A JP8609090 A JP 8609090A JP 2849853 B2 JP2849853 B2 JP 2849853B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing member
- electrophoretic display
- electrode
- display device
- electrophoretic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は電気泳動粒子を利用した表示装置に於いて、
封止部材に電界が作用しないように電極をパターンニン
グすることにより電極の劣化を防止するようにした電気
泳動表示装置に関する。The present invention relates to a display device using electrophoretic particles,
The present invention relates to an electrophoretic display device in which an electrode is patterned so that an electric field does not act on a sealing member to prevent deterioration of the electrode.
「従来の技術」 電気泳動粒子を利用したこの種の電気泳動表示装置
は、第２図に示すように、対向面に各々酸化インジウム
・スズ等の適宜な透明導電部材を使用して所要の表示用
電極パターン12、14を各別に形成した二枚の透明ガラス
板11、13を設け、液体分散媒に電気泳動粒子16を分散さ
せて分散系17をその対向間隙間に封入すべくスペーサ兼
用の封止部材15を外周部位に配装した構造を有する。こ
のような表示装置は、電極パターン12及び14に表示駆動
用電圧を印加して電気泳動粒子16を電極パターン12、14
に吸着・離反させ得るように分散系17に電界を作用させ
て電気泳動粒子16の分布状態を変えることにより分散系
17の光学的特性に変化を与えて所望の表示動作を行なわ
せるものである。2. Description of the Related Art As shown in FIG. 2, this type of electrophoretic display device using electrophoretic particles has a required display by using a suitable transparent conductive member such as indium tin oxide on the opposing surfaces. Provided are two transparent glass plates 11 and 13 in which electrode patterns 12 and 14 are separately formed, and also serve as a spacer to disperse the electrophoretic particles 16 in a liquid dispersion medium and enclose the dispersion system 17 between the opposed gaps. It has a structure in which the sealing member 15 is provided on the outer peripheral portion. In such a display device, a display driving voltage is applied to the electrode patterns 12 and 14 to cause the electrophoretic particles 16 to move to the electrode patterns 12 and 14.
An electric field is applied to the dispersion system 17 to change the distribution state of the electrophoretic particles 16 so that the particles can be adsorbed and separated from the dispersion system.
A desired display operation is performed by changing the optical characteristics of 17.
「発明が解決しようとする課題」 封止部材15が電極パターン12、14に挟まれている上記
構造の表示装置では、長期間電圧を印加して動作すると
封止部材に接触している電極が変質し、電極パターンの
電気抵抗が著しく上昇するという問題が発生する。斯か
る現象を検討した結果、この電極の劣化は封止部材に強
い電界を加える場合にのみ発生し、封止部材を介した電
気化学的な電極腐食反応であることが分った。[Problems to be Solved by the Invention] In the display device having the above structure in which the sealing member 15 is sandwiched between the electrode patterns 12 and 14, when the device is operated by applying a voltage for a long period of time, the electrode in contact with the sealing member is turned off. This causes a problem that the electrode pattern is deteriorated and the electric resistance of the electrode pattern is significantly increased. As a result of examining such a phenomenon, it was found that this electrode deterioration occurred only when a strong electric field was applied to the sealing member, and was an electrochemical electrode corrosion reaction via the sealing member.
「発明の目的及び構成」 本発明はこの種の電気泳動装置に於いて、封止部材に
電圧が印加されないように電極パターンを形成した電気
泳動表示装置を提供するものである。"Object and Configuration of the Invention" The present invention provides an electrophoretic display device of this type, in which an electrode pattern is formed so that no voltage is applied to a sealing member.
その為に本発明に係る電気泳動表示装置では、少なく
とも一方が透明質に構成された一組の対向配置した電極
板間に電気泳動粒子を分散させた分散系を封入する構造
の電気泳動表示装置に於いて、上記電極板を接着すべく
その対向電極板間に配置した封止部材には電界が作用し
ないように該封止部材に接触する電極の少なくとも一方
を除去するように構成したものである。Therefore, in the electrophoretic display device according to the present invention, an electrophoretic display device having a structure in which a dispersion system in which electrophoretic particles are dispersed is disposed between a pair of opposedly arranged electrode plates at least one of which is transparent. Wherein at least one of the electrodes in contact with the sealing member is removed so that an electric field does not act on the sealing member disposed between the opposing electrode plates to bond the electrode plate. is there.
「実 施 例」 以下、図示の実施例を参照しながら本発明を更に詳述
する。第１図に於いて１及び３は、透明な剛体電極板を
構成する為の基材として用いた透明なガラス板であっ
て、その上面には酸化インジウム・スズ（ITO）等の透
明導電材料を使用して電極パターン２、４が形成されて
おり、また封止部材５（ダイアボンドPA−50）には電圧
が印加されないように、両電極パターン２、４の一方は
封止部材５にかかる虞のないように構成されている。"Example" Hereinafter, the present invention will be described in more detail with reference to the illustrated example. In FIG. 1, reference numerals 1 and 3 denote transparent glass plates used as a base material for forming a transparent rigid electrode plate, and a transparent conductive material such as indium tin oxide (ITO) on the upper surface thereof. The electrode patterns 2 and 4 are formed using one of the two electrode patterns 2 and 4 so that no voltage is applied to the sealing member 5 (Diabond PA-50). The configuration is such that there is no such fear.
第３図（１）及び（２）は上下両電極パターン２、４
及び封止部材５の形成態様を示すものであり、両図の如
く表示に必要な電極パターン２及び４は各々封止部材５
の内方に所要の間隙を保持させて形成し、それらの端子
部2A、4Aは封止部材５の上下反対の個所で各電極パター
ン２、４から引き出されるように構成してある。封止部
材５は、ポリアミド樹脂等のホットメルト接着部材で構
成し、封止部材５の形成処理と両電極パターン間の接合
処理を好適になし得る。FIGS. 3 (1) and (2) show upper and lower electrode patterns 2, 4 respectively.
And the form of formation of the sealing member 5, and the electrode patterns 2 and 4 required for display as shown in FIGS.
The terminal portions 2A and 4A are formed so as to be drawn out from the respective electrode patterns 2 and 4 at locations opposite to the upper and lower sides of the sealing member 5. The sealing member 5 is made of a hot-melt adhesive member such as a polyamide resin, so that the forming process of the sealing member 5 and the joining process between the two electrode patterns can be suitably performed.
上記のような電極パターン及び封止部材の配設構造を
有する外形50mm角、50μｍ厚さの電気泳動表示セルに、
電気泳動粒子６を含む以下の組成の分散系７を封入し、
両電極パターン２及び４間に50V、300msecの矩形波電圧
を50msecの周期で印加して評価した。The outer shape 50 mm square having the arrangement structure of the electrode pattern and the sealing member as described above, an electrophoretic display cell having a thickness of 50 μm,
A dispersion system 7 having the following composition including the electrophoretic particles 6 is enclosed,
A rectangular wave voltage of 50 V and 300 msec was applied between the two electrode patterns 2 and 4 at a cycle of 50 msec for evaluation.
液 組 成 分 散 媒：ヘキシルベンゼン ……20.6 g 粒 子:ZnS ……6.0 g 界面活性剤:AOT ……0.3 g 染 料：オイルブルーBA ……0.24g その結果、端子部2A、4A間の抵抗値は、 初 期:1.3×106Ω 10日後:0.9×106Ω と抵抗値に著しい変化はなく、安定した表示動作を維持
した。Liquid set Ingredients dispersion medium: hexylbenzene ...... 20.6 g particle Child: Z n S ...... 6.0 g surfactant: AOT ...... 0.3 g dye charge: Oil Blue BA ...... 0.24g result, the terminal unit 2A, 4A The resistance value during the initial stage was 1.3 × 10 6 Ω, and after 10 days: 0.9 × 10 6 Ω, there was no significant change in the resistance value, and a stable display operation was maintained.
一方、比較の為に第２図の如き両電極パターン12、14
が封止部材15の部分にも一様に形成された従来構造で、
同じく外形50mm角、50μｍ厚さの電気泳動表示セルで上
記実施例と同様の封止部材及び同組成の分散系を用いて
上記同様の電圧を印加し、端子部間の抵抗を測定したと
ころ、 初 期:1.0×106Ω ３日後:1.1×1010Ω となり、封止部材15を挟む電極パターンの近接した抵抗
値は無限大を示し、ホットメルト接着材部分のITOが著
しく変化していた。On the other hand, for comparison, both electrode patterns 12, 14 as shown in FIG.
Is a conventional structure uniformly formed on the part of the sealing member 15,
The same voltage was applied using the same sealing member and the same dispersion system as in the above example in the electrophoretic display cell having the outer shape of 50 mm square and 50 μm thickness, and the resistance between the terminals was measured. Initial: 1.0 × 10 6 Ω After 3 days: 1.1 × 10 10 Ω, the resistance value close to the electrode pattern sandwiching the sealing member 15 showed infinity, and the ITO of the hot melt adhesive material portion changed remarkably .
「発明の効果」 本発明は以上のとおり、この種の電気泳動表示装置に
於いて、上記電極板を接着すべく封止部材を対向電極板
間に配置し、この封止部材には電界が作用しないように
該封止部材に位置する部位には上記対向電極板の少なく
とも一方の電極部分を形成しないように構成したので、
表示駆動用電界の作用によって封止部材と接触する電極
パターン部分の電気的劣化を確実に防止できる。[Effects of the Invention] As described above, in the electrophoretic display device of this type, the present invention arranges a sealing member between the opposing electrode plates so as to bond the above-mentioned electrode plates, and an electric field is applied to the sealing member. Since it is configured so that at least one electrode portion of the counter electrode plate is not formed on the portion located on the sealing member so as not to act,
By the action of the display driving electric field, it is possible to reliably prevent electrical deterioration of the electrode pattern portion in contact with the sealing member.
従って、酸化インジウム・スズ等で構成される上記電
極パターンの配置構成によって、長期使用下でも安定し
た電気泳動表示動作を確保できる。Therefore, a stable electrophoretic display operation can be ensured even under long-term use by the arrangement of the electrode patterns made of indium tin oxide or the like.
第１図は本発明に係る電気泳動表示装置の概念的な断面
構成図、 第２図は従来構造に従った電気泳動表示装置の同様な断
面構成図、そして、 第３図（１）、（２）は本発明の電気泳動表示装置で用
いた上下両電極板の概念的平面構成図である。 1:透明ガラス板 2:電極パターン 2A:端子部 3:透明ガラス板 4:電極パターン 4A:端子部 5:封止部材 6:電気泳動粒子 7:表示用分散系FIG. 1 is a conceptual cross-sectional configuration diagram of an electrophoretic display device according to the present invention, FIG. 2 is a similar cross-sectional configuration diagram of an electrophoretic display device according to a conventional structure, and FIGS. 2) is a conceptual plan view of the upper and lower electrode plates used in the electrophoretic display device of the present invention. 1: Transparent glass plate 2: Electrode pattern 2A: Terminal part 3: Transparent glass plate 4: Electrode pattern 4A: Terminal part 5: Sealing member 6: Electrophoretic particles 7: Dispersion system for display
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 高志 茨城県稲敷郡茎崎町天宝喜757 日本メ クトロン株式会社南茨城工場内 (72)発明者 外山 二郎 茨城県稲敷郡茎崎町天宝喜757 日本メ クトロン株式会社南茨城工場内 (58)調査した分野(Int.Cl.6，ＤＢ名) G02F 1/167──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Mori 757 Tenhoki, Kusazaki-cho, Inashiki-gun, Ibaraki Japan Inside of the Mektron Co., Ltd. Minami-Ibaraki Plant (58) Field surveyed (Int.Cl. 6 , DB name) G02F 1/167
Claims (3)
の対向配置した電極板間に電気泳動粒子を分散させた分
散系を封入する構造の電気泳動表示装置に於いて、上記
電極板を接着すべく封止部材を対向電極板間に配置し、
この封止部材には電界が作用しないように該封止部材に
位置する部位には上記対向電極板の少なくとも一方の電
極部分を形成しないように構成したことを特徴とする電
気泳動表示装置。1. An electrophoretic display device having a structure in which a dispersion system in which electrophoretic particles are dispersed is enclosed between a pair of opposedly arranged electrode plates at least one of which is transparent. A sealing member is arranged between the counter electrode plates for bonding,
An electrophoretic display device, wherein at least one electrode portion of the counter electrode plate is not formed at a portion located on the sealing member so that an electric field does not act on the sealing member.
た請求項（１）に記載の電気泳動表示装置。2. The electrophoretic display device according to claim 1, wherein the sealing member is made of a hot melt adhesive.
なる請求項（２）に記載の電気泳動表示装置。3. The electrophoretic display according to claim 2, wherein the hot melt adhesive is made of a polyamide resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2086090A JP2849853B2 (en) | 1990-03-31 | 1990-03-31 | Electrophoretic display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2086090A JP2849853B2 (en) | 1990-03-31 | 1990-03-31 | Electrophoretic display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03284732A JPH03284732A (en) | 1991-12-16 |
| JP2849853B2 true JP2849853B2 (en) | 1999-01-27 |
Family
ID=13877014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2086090A Expired - Fee Related JP2849853B2 (en) | 1990-03-31 | 1990-03-31 | Electrophoretic display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2849853B2 (en) |
-
1990
- 1990-03-31 JP JP2086090A patent/JP2849853B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03284732A (en) | 1991-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5279511A (en) | Method of filling an electrophoretic display | |
| SU1620056A3 (en) | Liquid-crystal device with microcapsulated components | |
| JP2733678B2 (en) | Electrophoretic display device and method of manufacturing the same | |
| JP2733680B2 (en) | Electrophoretic display device and method of manufacturing the same | |
| JPH02284125A (en) | Electrophoretic display device and production thereof | |
| MY122191A (en) | Liquid crystal display device having spacers with two sizes and metal films and protrusions | |
| JPH0823644B2 (en) | Driving method for electrophoretic display device | |
| JP2777729B2 (en) | Electrophoretic display device and method of manufacturing the same | |
| JP2849853B2 (en) | Electrophoretic display | |
| JP2612472B2 (en) | Electrophoretic display device and method of manufacturing the same | |
| JP3189958B2 (en) | Electrophoretic display device | |
| JPH01291215A (en) | Liquid crystal display device | |
| JPH01177517A (en) | Electrophorectic display device | |
| JP3019808B2 (en) | Manufacturing method of liquid crystal display device | |
| JPH1010551A (en) | Liquid crystal display element | |
| JP2759677B2 (en) | Electro-optic display cell | |
| JPH0421170B2 (en) | ||
| JPS6343435B2 (en) | ||
| JPH03238494A (en) | Cataphoresis display device | |
| WO2001025844A1 (en) | Liquid crystal display panel, method for manufacturing the same, and driving method | |
| CA1147042A (en) | Electrochromic device with cationic exchange resin separator | |
| JPH01300232A (en) | Electrophoresis display device and its manufacture | |
| JP3471951B2 (en) | Method and apparatus for manufacturing liquid crystal display element | |
| JP2718667B2 (en) | Manufacturing method of liquid crystal display element | |
| JPS63123015A (en) | Manufacture of curved surface liquid crystal cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071113 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081113 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091113 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |